CORDLESS TELEPHONE SYSTEM
PURPOSE:To simplify the constitution of a master station by informing a speed state of the master station on a slave station side by utilizing a reset signal from the master station for resetting the slave station to a receiving holding state. CONSTITUTION:When a reset switch 41 is operated in a mas...
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Zusammenfassung: | PURPOSE:To simplify the constitution of a master station by informing a speed state of the master station on a slave station side by utilizing a reset signal from the master station for resetting the slave station to a receiving holding state. CONSTITUTION:When a reset switch 41 is operated in a master station, a tone signal f5 of a reset signal is transmitted by driving a circuit use signal generat ing circuit 22, and a slave station is reset to a receiving holding state. Also, when a receiver of a telephone set 2 is picked up, a relay RY-6 is excited by an operation of a circuit connection informing circuit 21, relay contacts RYS-62, RYS-63 are closed and a tone signal f5 of a circuit use signal is transmitted. In the slave station, when the tone signal f5 is detected, an AND gate A15 is opened and a circuit use signal generating circuit 54 is driven, and from a loud-speaker 48, a circuit use signal is generated. In such a way, it will suffice that one kind of signal is transmitted from the master station, and the constitu tion of the master station can be simplified. |
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